Por favor, use este identificador para citar o enlazar este documento: https://hdl.handle.net/2445/133355
Título: Hyperon-Nucleon Interactions from Quantum Chromodynamics and the Composition of Dense Nuclear Matter
Autor: Beane, Silas R.
Chang, Emmanuel
Cohen, S. D.
Detmold, William
Lin, H. W.
Luu, Thomas C.
Orginos, Kostas
Parreño García, Assumpta
Savage, Martin J.
Walker-Loud, André
NPLQCD Collaboration
Materia: Cromodinàmica quàntica
Hiperons
Nucleòtids
Quantum chromodynamics
Hyperons
Nucleotides
Fecha de publicación: 23-oct-2012
Publicado por: American Physical Society
Resumen: The low-energy n Σ − interactions determine, in part, the role of the strange quark in dense matter, such as that found in astrophysical environments. The scattering phase shifts for this system are obtained from a numerical evaluation of the QCD path integral using the technique of lattice QCD. Our calculations, performed at a pion mass of m π ∼ 389     MeV in two large lattice volumes and at one lattice spacing, are extrapolated to the physical pion mass using effective field theory. The interactions determined from lattice QCD are consistent with those extracted from hyperon-nucleon experimental data within uncertainties and strengthen model-dependent theoretical arguments that the strange quark is a crucial component of dense nuclear matter.
Nota: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.109.172001
Es parte de: Physical Review Letters, 2012, vol. 109, num. 17, p. 172001
URI: https://hdl.handle.net/2445/133355
Recurso relacionado: https://doi.org/10.1103/PhysRevLett.109.172001
ISSN: 0031-9007
Aparece en las colecciones:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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